Patents by Inventor Shailesh Natwarlal Patel

Shailesh Natwarlal Patel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for monitoring EGR system flow
    Patent number: 5727533
    Abstract: A method and apparatus for monitoring an EGR system during normal vehicle operations is disclosed. An EGR valve located in an EGR passage controls the flow of exhaust gas to an intake manifold, and a sensor disposed in the air intake manifold downstream of air and EGR confluence point, monitors temperature of the mixture. A controller calculates a correlation function between a calculated desired EGR flow and the output of the manifold temperature sensor. If the value of correlation function is lower than a reference level, the monitoring system deterioration of EGR flow rate is indicated.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: March 17, 1998
    Assignee: Ford Global Technologies, Inc.
    Inventors: David Karl Bidner, Alexander Y. Gopp, Shailesh Natwarlal Patel